//Swiping up will delete the card and take the user back to the subject page if then then press delete on the popup
//Swiping down will show the user the answer; giving them the option to either press the button or use a gesture
private async void SwipeContainer_Swipe(object sender, SwipedEventArgs e)
{
if (e.Direction == SwipeDirection.Up)
{
bool popupResult = await DisplayAlert("Alert", "Are you sure you want to delete this card?", "Delete", "Cancel");
if (popupResult)
{
ArrayControl.deleteCard(pubSelectedSubject, pubSelectedCard);
this.Navigation.RemovePage(this);
pubSubjectPage.updateCards();
}
}
else if (e.Direction == SwipeDirection.Down)
{
answer.IsVisible = true;
BackgroundImageSource = ImageSource.FromResource("FlashCardsApp.CardBackgroundOpen.png");
}
}
//If the page is in view mode, tapping the edit button will enable edit mode, allowing the user to change the text in the entries
//Once in edit mode the button changes to a save button; when pressed the changed entries will be saved and the page will go back into view mode
private void btnEdit_Clicked(object sender, EventArgs e)
{
if (btnEdit.Text == "Edit")
{
answer.IsVisible = true;
btnEdit.BackgroundColor = Color.Green;
btnEdit.Text = "Save";
question.IsReadOnly = false;
answer.IsReadOnly = false;
BackgroundImageSource = ImageSource.FromResource("FlashCardsApp.CardBackgroundOpen.png");
}
else
{
btnEdit.BackgroundColor = Color.Blue;
btnEdit.Text = "Edit";
question.IsReadOnly = true;
answer.IsReadOnly = true;
ArrayControl.editCard(pubSelectedSubject, pubSelectedCard, question.Text, answer.Text);
pubSubjectPage.updateCards();
ArrayControl.JsonSave();
}
}
//If the page is in view mode, tapping the edit button will enable edit mode, allowing the user to change the name of the subject
//Once in edit mode the button changes to a save button; when pressed the changed entry will be saved and the page will go back into view mode
private void btnEditName_Clicked(object sender, EventArgs e)
{
if (btnEditName.Text == "Title")
{
btnEditName.BackgroundColor = Color.Green;
btnEditName.Text = "Save";
subjectTitle.IsReadOnly = false;
}
else
{
btnEditName.BackgroundColor = Color.FromHex("#fafafa");
btnEditName.Text = "Title";
subjectTitle.IsReadOnly = true;
ArrayControl.EditSubject(pubSelectedSubject, subjectTitle.Text);
pubMainPageVM.pubMP.UpdateSubjects();
ArrayControl.JsonSave();
}
}
//Adds a new subject to the subject array, updates the list view, and takes the user to the subject page with edit mode enabled
private async void btnCreateSbj_Clicked(object sender, EventArgs e)
{
ArrayControl.CreateSubject("New Subject");
UpdateSubjects();
await Navigation.PushAsync(new SubjectPage(ArrayControl.subjectArray.Length - 1, viewModel, true));
}
//Adds a new card to the card array, updates the list view, and takes the user to the card page with edit mode enabled
private async void btnCreate_Clicked(object sender, EventArgs e)
{
ArrayControl.CreateCard(pubSelectedSubject);
updateCards();
await Navigation.PushAsync(new CardPage(pubSelectedSubject, ArrayControl.cardArray.Length - 1, this, true));
}
//Detecs if the user swipes down, and saves the arrays to a JSON file then tells the user
private async void SwipeContainer_Swipe(object sender, SwipedEventArgs e)
{
if (e.Direction == SwipeDirection.Down)
{
ArrayControl.JsonSave();
await DisplayAlert("Alert", "Cards Saved Successfully!", "Ok");
}
}
//Saves all of the arrays to a JSON file and refreshes the main page list view
public void UpdateSubjects()
{
ArrayControl.JsonSave();
viewModel.updateListView();
SubjectsListView.ItemsSource = null;
SubjectsListView.ItemsSource = viewModel.subjects;
}
//Deletes the subject that the user is currently on the page for, then removes the page and updates the mainpage listview
private void btnDelete_Clicked(object sender, EventArgs e)
{
ArrayControl.DeleteSubject(pubSelectedSubject);
this.Navigation.RemovePage(this);
pubMainPageVM.pubMP.UpdateSubjects();
}
//Saves all of the arrays to a JSON file and refreshes the list view
public void updateCards()
{
viewModel.updateListView(pubSelectedSubject);
CardsListView.ItemsSource = null;
CardsListView.ItemsSource = viewModel.cards;
ArrayControl.JsonSave();
}